Product details


Regulated outputs (#) 4 Vin (Min) (V) 4 Vin (Max) (V) 40 Iout (Max) (A) 2 Step-down DC/DC controller 2 Step-down DC/DC converter 1 Step-up DC/DC controller 0 Step-up DC/DC converter 0 LDO 1 Iq (Typ) (mA) 0.03 Features Eco-mode, Enable, Over Current Protection, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Automotive Processor name Generic Processor supplier Generic Shutdown current (Typ) (uA) 5 Configurability Hardware configurable open-in-new Find other Multi-channel ICs (PMIC)

Package | Pins | Size

HTQFP (PHP) 48 81 mm² 9 x 9 open-in-new Find other Multi-channel ICs (PMIC)


  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H1C
    • Device CDM ESD Classification Level C3B
  • Input Range up to 40 V, (Transients up to 60 V)
  • Input Voltage Range: 4 V to 40 V
    • Transients up to 60 V
  • Dual-Output Synchronous Buck Controller
    • Peak Gate Drive Current 0.6 A
    • Automatic Low-Power Mode Operation
    • Low-Power-Mode IQ : 30 µA (One Buck On), 35 µA (Two Bucks On)
  • Low Shutdown Current, Ish = 5 μA Typical
  • Single Synchronous Buck Regulator Converter BUCK3
    • Max Output Current 2 A
  • Linear Regulator LREG1
  • Separate Enable Inputs (EN1, EN2, EN3, EN4)
  • Internal Oscillator, Programmable via External Resistor, 150 kHz to 600 kHz for Switching Frequency fSW_BUCK1,2,3
  • Integrated PLL, External Synchronization Frequency: 150 kHz to 600 kHz
  • Switch-Mode Regulators Operate With 180° Phase-Shift
  • Reset Output for All Output Rails
  • Supply and Overvoltage Detection and Shutdown
  • Thermally Enhanced PowerPAD Package
    • 48-Pin HTQFP (PHP)

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The TPS43340-Q1 is a quad rail power supply featuring two synchronous Buck Controller with 0.6-A gate drive, one synchronous 2-A Buck Converter and a 300-mA LDO with low quiescent current. The device is designed to power the entire system including MCU and DSP straight from the car battery respectively input voltages up to 40 V. The device features integrated short-circuit and overcurrent protection on the gate-drive outputs for the buck regulator controllers and independent current-foldback control for each buck regulator supply during regulator output short to ground. Each output supply incorporates a soft start to ensure that on initial power up these regulated outputs are not in current limit. Implementation of reset delay on power up allows the outputs of Buck1, Buck2, Buck3 and the linear regulator to get to stable regulation. An external capacitor sets the delay to a maximum range of 300 ms. Each power-supply output has adjustable output voltage based on the external resistor-network settings. The device has sequencing control during power up and power down of the output rails, based on the enable-and-disable control or soft start.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet TPS43340-Q1 Low-IQ, 30-µA, High-VIN Quad-Output Power Supply datasheet (Rev. E) Dec. 17, 2015
White papers Power Management IC (PMIC) Guide for Automotive (Rev. A) Oct. 29, 2014
Technical articles Don’t underestimate the power of an LDO Oct. 19, 2013
Technical articles How to optimize your DSP power budget Oct. 03, 2013
User guides TPS43340-Q1 Design Checklist Sep. 27, 2013
Technical articles "X" Marks the spot - 7 Treasures in a pirate engineer's treasure chest Sep. 19, 2013
Technical articles Power Tips: How to be discrete Sep. 17, 2013
User guides TPS4334xEVM User's Guide Jul. 25, 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide
The Texas Instruments TPS43340EVM evaluation module (EVM) helps designers evaluate the operation and performance of TPS43340, a low Iq, high VIN quad power supply.
  • Low Iq, High VIN Quad-Output Power Supply
  • Input Voltage Range: 4V to 40V
  • Dual Output Synchronous Buck Controller
  • Single synchronous 2A Buck converter
  • 300mA LDO
  • Design tools & simulation

    SLVM858A.ZIP (243 KB) - PSpice Model
    PSpice® for TI design and simulation tool
    PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
    • Leverages Cadence PSpice Technology
    • Preinstalled library with a suite of digital models to enable worst-case timing analysis
    • Dynamic updates ensure you have access to most current device models
    • Optimized for simulation speed without loss of accuracy
    • Supports simultaneous analysis of multiple products
    • (...)
    SLVC527.ZIP (18 KB)

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    HTQFP (PHP) 48 View options

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